Application of Fourier transform ion cyclotron resonance mass spectrometry in molecular characterization of dissolved organic matter  

作　　者：Chen HE Ding HE Chunmao CHEN Quan SHI 

机构地区：[1]State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China [2]Department of Ocean Science and Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou),The Hong Kong University of Science and Technology,Hong Kong 999077,China

出　　处：《Science China Earth Sciences》2022年第12期2219-2236,共18页中国科学（地球科学英文版）

基　　金：supported by the National Key Research and Development Program of China(Grant Nos.2018YFA0605800,2020YFA0607600);the National Natural Science Foundation of China(Grant No.42003059);the Science Foundation of China University of Petroleum,Beijing(Grant No.2462021XKBH005);the Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou)(Grant No.SMSEGL20SC02).

摘　　要：Dissolved organic matter(DOM)plays an important role in the global carbon cycle,and an in-depth analysis of its chemical composition is fundamental to the study of its environmental and biogeochemical behavior and significance.DOM is a complex mixture of organic substances,and determining its molecular composition is a long-standing challenge in the field of analytical chemistry.The development and application of Fourier transform ion cyclotron resonance mass spectrometry(FT-ICR MS)has enabled the identification of the chemical composition of DOM at the molecular level.This paper summarizes progress made in the molecular characterization of DOM based on the FT-ICR MS technique,including DOM sample pretreatment methods,mass spectrometry ionization techniques,data acquisition,data processing and presentation,and molecular structure characterization.Focusing on the work done by the instrument at the State Key Laboratory of Heavy Oil Processing in the China University of Petroleum,Beijing,we introduce applications of FT-ICR MS in the fields of earth science,environmental science and engineering,and look ahead to further research directions in the future.

关 键 词：Dissolved organic matter FT-ICR MS Molecular composition Recalcitrant dissolved organic matter High resolution mass spectrometry 

分 类 号：O657.63[理学—分析化学] P593[理学—化学]